From the first episode it seemed to me that our "dear Sa-Chan" was getting set up by a pair of grifters. I assumed what he immediately gets himself involved in is a honey trap extortion scheme. Maybe I was wrong but maybe I was actually "half" right? I'll never really know. Maybe I'm dumb, but It's all so unclear, and the dialogue is so formal and stilted that I found the whole business inscrutable. But I kept watching for the wtf? Factor and to see if there'd be some shocking plot twist. Whether there is, I won't say. (No spoiler zone.) I've watched a lot of Japanese TV series on Netflix (at least 25 or so) but never have I encountered one with such a clueless and unlikeable protagonist. And with the finale implying that something extremely disturbing is about to go down, he just goes from bad to worse. But then maybe this series represents some kind of Japanese neo-existentialism, and I'm just not intellectual enough to appreciate how "deep" it is. Whatever. Not gonna lie, the only "deepness" I ever sensed is the overwrought opening sequence with the hapless Sa-Chan submerged in dark water and struggling for air. (btw, that underwater scene is jarring and over-used for its cheap shock effect.) Any stars I'm giving all go to the actress who plays the alluring Shino. It's too bad her character's arc has nowhere to go. What a waste.